Weird rear tire noise when accelerating

I just got a new 2019 SR ex cab 4x4. I already put 265/75 KO2's on it which I love.

Anyway, i drove it today for the first time with the windows down since it wasn't hot as hades and I noticed a weird noise coming from the rear driver side tire. It sounds like typical road noise, but the strange thing is it only occurs while accelerating. It almost sounds like my tires slipping/grabbing the road,Like I'm spinning tires anytime I accelerate.

Is this normal, am i crazy? I feel a bit paranoid since its my first new truck.

Any input is appreciated

 

That's the sound of KO2s beating the road into submission.

What PSI you running?

 

45psi all around.

Truck only has 300 miles on it, tires have about 100

 

That's a bingo!

 

Too much...
Try 37 psi.

 

45psi? Holy shit and check for stones in the treads

 

Tire noise can be excessively loud when they are over-inflated. I would drop them down to 35psi personally. Probably ride like bricks too with 45 I imagine

 

You crazy!

 

KO2's are heavy and hard. Try 32-35.

 

I thought 45 seemed excessive, I had BFG 33x12.50 r16.5 on my f-150 for years and only ran 30psi in those. They have been riding like wagon wheels haha

i dropped to 38 front and 36 rear, I'll update tomorrow. Thanks fellas

 

Yep

 

Much better with the lower psi, i still hear it but its much quieter and definitely rides better

 

Lower pressure and windows up. Should be good to go!

I think I used to run mine at 36.

G.